esx.problem.storage.connectivity.lost
Summary
The event indicates a loss in connectivity to the specified storage device. The path indicated is the last path that went down.
Causes
Failure of the storage connection cable, disconnect of cable, failure of the physical storage adapter, failure of disk controller, port, and so on.
Resolutions
Refer to this VMware KB article for information on resolution steps.
External
Refer to the VMware Online Documentation for more information on vCenter event messages and possible solutions.